Purple sprouting brocolli is wonderful and just coming in to season (at least it is here). It is really good with hollandaise, and there is a recipe in the sbd book for mock hollandaise which is quite good.
Cabbage is nice with either bacon (choose lean to stay op) or caraway seeds. What I do with cabbage is shred it, steam it lightly and then toss it in the caraway seeds. Or the bacon recipe (you need to decide whether you will have bacon and if you can find a good lean cut) is that you stir fry a clove of garlic and about a tablespoon of fresh rosemary in a tiny bit of olive oil, then add the bacon and cook it up until it smells lovely, then add a shredded cabbage and about a quarter of a pint of liquid, I use veg stock or sometimes a glass of wine plus some stock. Put the lid on and let it cook for 15 mins. Divine.
I have a book called 'what can I do with all these courgettes' if anyone ever wants a courgette recipe.....
(that is zuccinni to you stars and stripers).
Try mixing green veg with other interesting flavours that he does like, eg if he likes lemon, find recipes for brocolli with lemon (I used to do one with lemon and pine nuts until I decided it was weird and so stopped), or if he likes garlic learn those recipes (I saw something the other day that was basically green beans in a garlicky toss (dont mean to be rude......).
I also used to have a recipe for brussels sprouts in red wine.......that was something like, quarter the sprouts (takes forever, worse than peelling mushrooms), and then stir fry them with some garlic and some black olives, and then add a couple of glasses of red wine, bubble off the alcohol and cook for about 15 mins. Lovely.
Do you have kids? If so make him design the recipes and menus for the kids for two months, on strict nutritional guidelines. That will make him realise greens are good for him.
Also, do you have outside space? If so, grow some veg! Now is the time to start and no one can resist a plate of home grown, just picked runner beans..........true ambrosia.
xxx